arXiv subjects

E. S. Corchero

Publications and source records attributed to E. S. Corchero.

2 recordsLinked to original sources

arXiv2008

Gravitational vacuum polarization as an alternative to dark matter

It is assumed that the quantum vacuum may be studied as consisting of two contributions, with positive and negative energy respectively, which interact but slightly and may be displaced from each other. Then it is proposed that dark matter may be just an increase of the quantum vacuum energy, with respect to the normal dark energy level, induced by the gravitational field of galaxies or clusters. A simple model is worked out able to reproduce astronomical observations.

gr-qc↗

arXiv1997

Equilibrium of Spheres with Local Anisotropy in Postnewtonian Gravity. Application to White Dwarfs

Static solutions of white dwarfs with spherical symmetry and local anisotropy are studied in the post-Newtonian approximation. It is argued that the condition for equilibrium must be that the total energy is a minimum for given baryon number and the question whether there is local isotropy or anisotropy inside the star should follow from that condition, rather than be postulated "a priori". It is shown show that, in post-Newtonian gravity, there are stable configurations with local anisotropy for masses above the Chandrasekhar limit.

gr-qc↗